No Mayonnaise Potato Salad

Here is a no-mayonnaise potato salad
with peas, celery and onions.

Ingredients:
3 large baking potatoes or 7-8 small potatoes,
lightly boiled and sliced into 2-inch chunks
1/2 red onion, diced
2 ribs celery, diced
2 cups frozen green peas, dethawed
4 green onions, diced
1 teaspoon prepared mustard
3 tablespoons olive oil
1/2 teaspoon salt, or to taste
1/2 teaspoon ground black pepper, or to taste

Directions:
Gently toss all ingredients together
in a large bowl. Adjust seasonings to taste.
Be careful not to over-boil the potatoes.
Allow to cool before chopping into pieces.